Josh -- or whomever knows the answer -- how do I set Flickr photos to be read only here, without them hyperlinking to my Flickr account? I just reset one to Private and refreshed the BB code, but clicking the photo still works.

All photos on Flickr are ready only (that is, not editable), but they can be downloaded by other people. The reason that the link takes you to an editable photo is that your signed in to Flickr and clicking the link in your own photo.

Log out of flickr then paste the BB code, click the code. You'll still be taken to the photo in flickr you won't be able to edit it, just download it. Thats what other people see when they click your link.